"robert" <[EMAIL PROTECTED]> wrote in message news:[EMAIL PROTECTED]
Though mostly ignorant of threading issues, I wonder if the following would work. Derive a class from dict. Define a backup method that sets and unsets a private self.lock. Define setitem and delitem methods that wrap calls to the real methods with while self.lock: sleep(1 second). tjr -- http://mail.python.org/mailman/listinfo/python-list